In this talk, I will discuss a method to disentangle the star formation, chemical enrichment, and assembly histories of galaxies from integrated light spectroscopy. I will demonstrate how this can be used to infer the mass of stars that formed in-situ in a galaxy, as well as the mass that was acquired during mergers (ex-situ […]

Estrelas de bário e gigantes ricas em lítio são duas classes relativamente raras de estrelas quimicamente peculiares (~1%). Enquanto está bem estabelecido na literatura que as estrelas de bário se formam em sistemas binários, nos quais uma das componentes evoluiu até a fase de AGB, o mecanismo responsável pelo enriquecimento em lítio nas gigantes ainda […]

Abstract: Star clusters are one of the most useful places in the universe for studies of stellar and galaxy evolution. Formed when stars collapse from the same molecular cloud into a cluster, star clusters offer a unique way to study stars of a homogeneous age and chemical composition across a range of masses. In the […]

In-person seminar Abstract: The All-weather MUse Supernova Integral field Nearby Galaxies (AMUSING) survey is a successful programme that has observed more than 700 host galaxies of transient events (mostly supernovae - SNe) using the Multi Unit Spectroscopic Explorer (MUSE) instrument at the Very Large Telescope (VLT). In this talk, I will present the main goals, […]

Abstract: The Nancy Grace Roman Space Telescope, the next NASA flagship mission set to launch by May 2027, will revolutionize our understanding of the cosmos.  With a field of view 100 times greater than the Hubble Space Telescope at comparable resolution, Roman will perform an unprecedented high-latitude survey to map the distribution of dark matter […]

Abstract Magnesium isotope ratios provide a powerful probe of the origin of chemical anomalies in globular clusters. Although globular clusters were once thought to contain stars of a single chemical composition, we now know that many host multiple stellar populations with distinct abundance patterns. These variations point to high-temperature nuclear processing in an earlier generation […]

Abstract: The detailed chemical compositions of planet-hosting stars provide vital clues on the formation and composition of exoplanetary systems. A recent analysis by Pavlenko et al. (2019) suggests that planet-hosting stars tend to have larger C/O abundance ratios than stars without confirmed planets at given metallicity. This signature was solidified in Amarsi et al. (2019) […]

The demand for a large telescope dedicated to spectroscopic surveys is an interest shared worldwide and figures explicitly in many national strategic science plans. The Wide Field Spectroscopic Telescope (WST) is a community lead initiative to fill this crucial gap in astronomical capability and will work in synergy with future ground and space-based facilities.  WST […]

With the full-scale operations of the Vera C. Rubin Observatory and the Nancy Grace Roman Space Telescope now underway, astronomy has entered a golden age of time-domain discovery. As we move away from finding just a few rare transients, the International Gemini Observatory serves as the essential bridge between discovery and characterization. This talk explores […]